Paperboard slitting and scoring mechanism



March 25,1947. B Kg 2,418,066.

PAPERBOARD SLITTING AND SCORING MECHANISK Filed Aug. 12, 1944 4Sheets-Sheet 1 INVENTOR ATTORNEYS i v/MTM March 25 1947. H. w. BRUKERransom gramme AND sconme uacmmrsu Filed Aug. 12, 1944 4 Shelets-Sheet 2SN J L5 5 Q N INVENTOR H w A4 ATTORNEY M 25, 1947. H. w. BRUKER 2,

I PAPERHOARD SLITTING AND SCORING MECHANISM Filed Aug. 12, 1944 '4Sheets-Sheet 3 INVENTOR ZF L. R. n i T wfi |mw H. w. BRUKER 2,418,066PAPERBOARD SLITTING AND SCORING MECHANISM M ch 25, 1947.

Filed Aug. 12, 1944 4 Sheets-Sheet .4

BY haw! ehxjz ATTOR EYS Patented Mar. 25, 1947 UNITED STATES PATENTorrlcs PAPERBOARD SL ITTING AND SCORING MECHANISM I Hobart W. Bruker,Bordentown, N. J. Application August 12, 1944, Serial No. 549,271

time required to make adjustments of the above character, it also haslong been customary to provide two or more scoring and slitting unitswhich .were movableselectively to and from operating position, so thatwhile one unit was in operation during a production run, the operatorcould be adjusting an idle unit to position its slitters and scorers inthe locations desired for the next run, The slitting and scoring opera-.tions have been performed by sets of rotary disks,

9,Claims. (Cl. 164-61) adjustably mounted above and below the path 7 oftravel of the paper web and with the latter traveling between them, andthe above movements of :the slitting and scoring units to and fromoperating position have required that one set of disks move through thepath of travel of the paperweb. Thus before one slitting and scoringunit could be substituted in operation for another, the paper web had tobe severed befor reaching the slitting and'scoring units, and a gap inthe paper web created at such units, through which the units could move.To create this gap the feed of the paper web to the slitting and scoringmechanism had to be slowed down or entirely stopped. Also the slittingand scoring units of the prior art which were thus moved to inoperativeposition for set-up purposes, were left inian awkward and inaccessibleposition underneath the path of travel of the web, where the operatorhad to crawl in under the paperboard web and set the slitting andscoring disks for the next succeeding run under conating parts are soarranged that the shift thereor between operating and adjustingpositions may be made without slowing down or stopping the feed of thepaper web, enabling the machin to run continuously at any speedconformable to othenproduction requirements and dispensing with the needof any extra cutoff operating on v 2 the web before th latter reachesthe slitting and scoring units.

The invention also aims tov provide a mechanism wherein thenon-operating slitting and scoring disks will be left in a positionconvenient and accessible to the operator when adjusting them to thelocations desired for the next run.

It is also an obje:t of the invention to reduce the waste, off-dimensionproduction incident to the operation of substituting one slitting andscoring unit for another, and to reduce the time required for suchoperation.

Further. objects and advantages of th invention will bein part obviousand in part specifically referred to in the description hereinaftercontained which, taken in conjunction with the accompanying drawings,discloses a preferred formof machine constructed to operate in acecor-dance with th invention. The disclosure,

however, should be considered merely as illustrative of the principlesof the invention in its broader aspects. In the drawings-- Fig. 1 is aschematic side elevation showing the slitting and scoring mechanism inproper relation to the delivery end of the so-called double backingmachine which completes and delivers the corrugated paperboard web inthe form of a continuously traveling endless sheet.

Fig. 2 is a side elevation of the slitting and scoring mechanism, withcertain parts cut away.

Fig. 3 is an end elevation looking from the right of the machine as thelatter appears in Fig. 2.

Fig. 4 is a fragmentary plan view, partly in section, showing one of theadjusting devices used in the mechanism of Figs. 1-3.

Fig. 5 is a fragmentary end elevation, also partly in section, lookingfrom the right of Fig. 2, and showing certain driving gearing formingpart of the mechanism of Figs. 1-3. x

Fig. 1 shows a sheet I of continuously traveling corrugated paperboardissuing from the delivery end of a double basking machine having theupper and lower drive pulleys 2 and 3, whereupon the sheet travelswithout the need of any intervening cutoff mechanism to the slitting andscoring mechanism denoted generally at A, which may be driven from aside shaft 4 constituting the main drive shaft for the entir machine.

By the slitting and scoring mechanism A, longitudinal. score linesspaced the desired distances are formed in the web, and the slittingdisks operate to trim the side edges of the web to the desired width andmay also, if desired, slit the web into parallel strips indicated at laand lb in Fi l.

In accordance with the present invention I provide duplicate slittingand scoring units which are located at successive points along the pathof travel of the corrugated web, and each such unit isv so constructedthat the sets of slitting and scoring disks which lie respectively aboveand below the path of travel of the paper web, may be spaced apartvertically to enable the web to travel freely between them, and theupper and lower sets of such disks are so mounted as to afford a gapbetween their supporting parts in line with at least one side edge ofthe traveling web, and are further so mounted that the slitting andscoring structureas a whole may be moved transversely of the web to aposition at one side of the machine where the slitting and scoring disksare-conveniently accessible for resetting as needed for the subsequentproduction run. Thus, assuming that one slitting and scoring unit hasjust been moved into operative posi-= tion to start a production run,the sets of slitting and scoring disks of the unit which has justcompleted a run, will be spaced apart as above described, the unit willbe moved transversely of the machine to disk adjusting or resettingposition, the slitting disks will then be moved back into overlappingposition to facilitate their co-= ordinate adjustment to the newsettings desired, the slitting disks will then be again spaced apart asabove described, after which the unit is moved back into operativeposition with the upper and lower sets of disks spaced apart to enablethe paperweb to travel freely therebetween. At the end of the currentproduction run, the slitting and scoring unit which has been inoperation is adjusted to space its upper and lower disks apart to clearthe traveling web, and the slitting and scoring unit which haspreviously been adjusted as above described, is then adjusted to moveits upper and lower sets of disks toward each other into web-engagingposition. The machine thus requires for shifting from one run toanother, only the time required to spread apart the upper and lower setsof one unit, and to move together the upper and lower sets of disks' ofthe second'unit. During the production run, the slitting and scoringunit which has just gone out of service may then be moved transverselyof the machine to a position at one side of the traveling web as,

above described, whereupon the settings of its disks will be adjusted asneeded for the production run next to be made.

' Preferably a supplementary small lateral adjustment of the slittingdisks is also provided as hereinafter described in greater detail. sothat during the resetting period and after the slitting disks have beenoverlapped to facilitate their coordinate adjustment to their newdesired positions, the upper and lower slitting disks may be spacedtransversely a slight amount from each other, the slitting disks beingleft in this slightly spaced condition until after the unit has beenReferring now more particularly to Fig. 2, I have there illustrated aslitting and scoring mechanism having two units of the character abovedescribed and which are duplicates of each other, so a description ofone unit will suffice for both. The left hand unit as the machineappears in Fig. 2, has sets of upper and lower slitting disks 5 and 6(see Fig. 3)- carried respech tively by the upper and lower shafts I and8.

Likewise the illustrated machine has upper and lower sets of scoringdisks 9 and I0 (see Fig. 3)

,carried respectively by upper and lower shafts II and I2, The abovedisks may be assumed-to be of previously known or any appropriateconstruction.

In order to afford the above described trans verse movements of the unitbetween operating and disk resetting positions, the" shafts I, 8, II andI2 above described are mounted upon a carriage which is slidabletransversely of the machine, and the supporting structure for the.shafts is constructed to leave a gap in line with at least at: overeferred to.

chine which is illustrated the stationary strucsomewhat greater thantwice the length of shafts I, 8, H and i2, and upright frames I4 and 15are provided at opposite ends of the bed-plate l3. An arch-likecross-piece I6 is locatedabove each slitting and scoring structure, andan intermediate cross-piece l1 underlies each slittin and scoringstructure, these cross-pieces l6 and I1 acting as guides along which theslitting and scoring structure travels in movingbetween the operatingand disk resetting positions.

An appropriate form of carriage for the slitting and scoring structurewill now be described. As shown in Fig. 2, this carriage comprises upperand lower slide plates [8 and I9, respectively,

which are held in sliding relation respectively to the cross-pieces I6and I! by the guide strips 20 at the. top and 2| at the bottom.

In order to provide the above mentioned gap 22 (see left hand side ofFig. 3) line with at least one side edge of the paper web I, as abovedescribed, the ends of the shafts "I and H atone side of the machine maybe journaled in a bracket 23 extending downwardly from the upperslideplate l8, and terminating above the level of the traveling paper web I,and the corresponding ends of the shafts 8 and I2 may be journaled in abracket 24' extending upwardly from the lower slide plate l9 andterminating below the level' versely of the paper web from operativeposition with respect to web 2, as shown in Fig. 3, to a position at theright hand side of web I (as the machine appears in Fig. 3) theoperatingv disks being first relatively'spread or spaced apart to clearthem from engagement with the paper web as hereinafter described.

An appropriate power drive may be effecting the above describedtransverse movements. As shown a reversible motor 26 (which may beassumed to be of known type) drives a sprocket 21 (Fig. 2) throughappropriate speed reduction gearing, which sprocket in turn is connectedto a sprocket 28 on a shaft 29 by a chain used for aeraoec 30. The shaft29 carries a pinion 3| (Fig. 2) which engages a rack 32 on the undersideof the lower slide plate l9. The above adjustment will also take care ofthe usual minor transverse movements of the slitting and scoringstructure as needed to aline the disks properly with respect to the sideedges of the traveling paper web l, the motor being supplemented by ahand wheel 33 for this purpose if desired.

As above mentioned, appropriate mechanism is provided whereby the upperand lower sets of slitting and scoring disks may be spaced apart toclear the paper web when needed and subsequently moved back intoweb-engaging position. Fig. l shows mechanism suitable for this purpose,

such a mechanism being used in the illustrated formwith each of theupper shafts 1 and H, and

including a vertical. stud 34 mounted on a stationary bearing 35 andwhich may be manually operated by. an appropriate hand crank (not shown)to rotate the Worm 36. The latter in turn rotates a worm gear 31 carriedby a shaft 38 which runs across the machine. The shaft 38 carries apinion 39 which mes-hes with a gear 49 having a collar 4| whichsurrounds one of the bearings 42 for the shaft I or II as the case maybe, and is eccentrically disposed with respect to the latter, wherebyrotation of the stud 34 will cause hub 4| to rotate and thereby raise orlower the bearing 42 and the shaft enclosed thereby. It should beunderstood that parts (not shown) similar to the above described parts39 to 42 are provided at the opposite side of the machine so as to raiseor lower both ends of the shafts I or II (as the case may be) equally.

Thus when the slitting and scoring structure is to be moved fromoperative to disk-resetting position the studs 34 will first be turnedto relatively spread the upper and lower sets of disks 5, 9 and 6, l0and free them from penetration into the paper web, after which the motor26 may be energized to move the slitting and scoring structuretransversely to disk-resetting position. The usual forms of slitting andscoring disks do not require that both the upper and lower sets of disksbe so moved vertically to clear them from theweb, .preliminary totransverse movement. After the slitting and Scoring structure has beenmoved as above described to the side of the machine, the studs 34 may beagain adjusted to move the disks 5 and 9 back to operative relationrespectively with the disk 6 and Ill, whereupon the resetting of thedisks as required for the next production run may be made in the usualmanner. It will be noted that while this resetting operation is beingperformed, the unit under adjustment is in a convenient and accessiblewaisthigh position along side of the machine, where the operator canmuch more readily make accurate resettings than was the case with priormachines where he had to crawl under and squat down under the travelingpaper web to shift the disks.

As previously mentioned the mechanism is preferably so constructed thata slight transverse spacing may be effected between the upper and lowersets of slitting knives 5 and 6, before they are reset to the properpositions for the next succeeding run while the unit is in setting position at one side of the machine as above described. and after the resetunit is again placed in operation. In instances where slitters andscorers are carried by separate shafts, as in the described embodiment,the scoring disks need not partake of this supplementary transverseadjustment.

In the illustrated form of the invention, a hand wheel 43 (Fig. 3) ismounted on one end of a threaded spindle 44, which latter is rotatablymounted in the corresponding end of the shaft 8 by means of a suitablethrust bearing 45. -A stationary internally threaded nut it, carried bya housing 4'! which encloses'the end of a shaft 8, receives the threadedspindle M, and thus by rotating the hand wheel 43 the lower set ofslitting disk 6 may be moved to the left as the parts appear in Fig. 3.,to space them slightly transversely of the machine with respect to theircorresponding upper slitting disks 5. Then after theunit is moved backby motor 25 to aline it with the traveling paper web I,'the studs 34above described are actuated to relatively move the upper sets ofslitting and scoring disks downwardly. to engage the traveling web withthe disks, the lower set of slitting disks 6 being still slightly spacedtransversely of the machine with respect to the corresponding upperslitting disks 5. Then as the slitting disks start to cut, thehand-wheel t3 is actuated by the operator to shiftthe slitting disks 6to the right as the machine appears in Fig. 3, into laterally contactingrelation with the corresponding'upper disks 5. In this way injury isavoided to the cutting edges of the slitting disks, which otherwisemight occur when the upper and lower sets of disks are relatively movedtoward each other as previously described.

The units are also preferably so constructed that as they are movedtransversely into and out of alined position with respect to thetraveling paper web, the driving gearing for the disks is automaticallyconnected thereto and disconnected therefrom.

In the illustrated form of the invention driving power from the sidedrive shaft t is transmitted to an auxiliary shaft t8 j'ournaled in suitable bearings l9 and 59 (see Fig. 2) on the outer side of the end frameit, by means or sprockets 5i and 52 respectively on shafts i and tilt,and chain at, the power being transmitted to shaft it from sprocket 52through an appropriate friction clutch tit (Fig. 3). A bevel gear 55 onthe end of shaft t8 meshes with a bevel gear 56 on the end of a studshaft M which passes through and is Journaled in the frame it, the innerend of the stud shaft El carrying a crank pin 58 (Fig. 5) which isengageable with a crank arm 59 on the adjacent end of a spindle fillextending across the carriage and journaled in the brackets 24 and Theopposite end of the spindle 69 carries a pinion ti (Fig. 5) which mesheswith gears 62 and (53 on the corresponding ends (Fig. 2) of the shafts 3and i2. These gears 62 and 63 :in turn mesh respectively with gears .Mand $5 on the upper disk shafts i and Hi. The relative movements of theshaft l and it toward and from each other, as above described, need notbe sufiicient to throw the gears 62 and t l out of mesh with each other,and as indicated in Fig. 3-the gear 92 may move transversely parallel togear lit during transverse adjustments of the shaft 3 by hand wheel Thuswhenever the carriagecarrying the slitting and scoring disks is movedtransversely from operating to disk resetting position, the crank 59(Fig. 5) automatically disconnects from crank pintt so as to disconnectthe drive to the unit, and the drive is automatically reconnected whenthe carriage is moved back into alineme-nt with the travelingpaper web.The duplicate slitting and scoring unit shown at the right or Fig. 2will of the traveling paper web be either slowed down or stopped betweenruns, nor is any cut-off mechanism required to be used in advance of theslitting and scoring mechanism. The paper web may be run continuously atits normal speed, as

' is highly desirable in actual practice, and the waste productionbetween runs is reduced to a ing frame constructed to afford passage ofa continuous paperboard web past said frame, a carriage carrying upperand lower sets of web enminimum since at this stage it is only necessaryI for the operator to adjust the studs 34 and the hand wheel 43 of theslitting and scoring units which are respectively to be thrown into andout of operation. Thereafter the operator shifts the idle slitting andscoring unit to a position at one side of the machine as abovedescribed, adjusts the hand wheel 43 and studs 34 of such unit to movethe upper and lower sets of disks appropriately, then resets the disksto the proper spacings required for the next succeeding production run.The upper and lower sets of disks are then spaced apart by operation ofstuds 34, and hand wheel 43 is adjusted to space the slitting disks 6transversely from their respective-cooperating upper slitting disks 5.Then the reset slitting and scoring unit is moved transversely back intoalinement with the traveling paper web I, ready to be placed inoperation uponthe completion of the run then in progress.

'While the invention has been disclosed as carried out by a mechanism ofthe above described specific construction, it should be understood thatmany changes may be made therein without departing from the invention inits broader aspects, within the scope of the appended claims.

I claim:

l. Paperboard slittin and/orscoring mecha nism of the class described,including a supporting frame constructed to afford passage. of acontinuous paperboard web past said frame, a carriage carrying ,upperand lower sets of web engaging disks, means mounting said carriage uponsaidframe to afford transverse movements of said carriage betweenpositions respectively in alinement with the path of travel of the paperweb and at one side of said path, said carriage having supports for theupper and lower disk structures which are vertically spaced at one ideof the path of travel of the paperboard web to afford clearance for theaforesaid transverse movement of said carriage while the web extendsthrough the mechanism.

2. Paperboard slitting and/or scoring mechanism of the class described,including a supporting frame constructed to afford passage of acontinuous paperboard web past said frame, a carriage carrying upper andlower sets of web engaging disks, means mounting said carriage upon saidframe to afford transverse movements of said carriage between positionsrespectively in alinement with the path of travel of the paper web andat one side of said path, said carriage having supports for the upperand lower disk structures which are vertically spaced at one side of thepath of' travel of the paperboard web to afford clearance for theaforesaid transverse movements of 'said carriage while the web or:-tends through the mechanism, means being provided to afford relativemovements between the upper and lower sets of disks between operativeand relatively widely spaced positions.

3. Paperboard slitting and/or scoring mechanism of the class described,including a supportgaging disks, means mounting said carriage upon saidframe to afford transverse movements of said carriage between positionsrespectively in alinement with the path of travel of the paper web andat one side of said path, said carriage having supports for the upperand lower disk structures which are vertically spaced at one side of thepath of travel of the paperboard web to afford clearance for theaforesaid transverse movements of said'carriage while the web extendsthroughthe mechanism, means being provided to afford relative movementsbetween the upper and lower sets of disks between operative andrelatively widely spaced positions, and furth'er means being provided toafford relative transverse movements between the upper and lower sets ofslitting knives toward and from each other.

4. Paperboard slitting and/or scoring mechanism of the class describedincluding a supporting frame constructed to afford passage of acontinuous paperboard web past said frame, a plu rality of carriageseach carrying upper and lower sets of webengaging disks, means mountingeach of said carriages upon said frame to afford transverse movementthereof between positions respectively in alinement with the path oftravel of the paper web and at one side of said path, each of saidcarriages having supports for its corresponding upper and lower diskstructures which are vertically spaced at one side of the path of travelof the paperboard web to afford clearance for the aforesaid transversemovements of said carriages while the web extends through the mechanism.

5. Paperboard slitting and/or scoring mechanism of the class describedincluding a supporting frame constructed to afford passage of acontinuous paperboard web past said frame, a plurality of carriages eachcarrying upper and lower sets of web engaging disks, means mountingeachof said carriages upon said frame to affordtransverse movementthereof between positions respectively in alinement with the path oftravel of the paper web and at one side of said path, each of saidcarriages having supports for its corresponding upper and lower diskstructures which are vertically'spaced at one side of the path of travelof thepaperboard web to afford clearance for the aforesaid transversemovements of said carriages while the web extends through the mechanismand means being provided in connection with each of said carriages, toafford relative movements between their upper and lower sets of disksbetween operating and relatively widely spaced positions.

6. Paperboard slitting and/or scoring mechanism of the class describedincluding a supporting frame constructed to afford passage of acontinuous paperboard web past said frame, a carriage carrying upper andlower, sets of web engaging disks, means mounting said carriage uponsaid frame to afford transverse movements of said carriage betweenpositions respectively in alinement with the path of travel of the paperweb and at one side ofsaid path, power transmitting gearing for saiddisks carried by said frame,

' said carriage carrying power transmitting devices for said disks whichare automatically engageable with and disengageable from said firstmen'- tioned power transmitting gearing as said carriage is moved to andfrom a position in alinement with the path of travel of the paper web,said power transmitting gearing and devices including a crank and crankpin mounted one upon said frame and the other upon said carriage, and

which are positioned to come into, engagement f with each other whensaid carriage is movedto position in alinement the paper web. V I

7. Paperboard slitting and/or scoring mecha-.

with the: path of travel of nism of the class described including asupporting -frame constructed to enclose a continuous paperboard webwhen the latter is passing theresets of web engageable disks, said framehaving upper and lower transversely extending carriage engaging guidemembers mounting said carriage upon the frame to afford transversemovements of said carriage between positions respectively in alinementwith the path of travel of the paper web and at one side of said path,upper and lower bearing members adjacent one 'end of said carriagerespectively for the upper and lower disk through, a carriage carryingupper and lower structures above mentioned, said bearing members beingvertically spaced one from the other to afford a gap in alinement withthe path of travel of the paper web.

8. Paperboard slitting mechanism of the class described, including 'asupporting frame 'con-' structed to affordpassage of a paperboard webpast said frame, means carried by said frame for supporting upper andlower sets of slitting disks respectively above and below the path oftravel of said web, means affording relative up' and down movementsbetween the upper and lower sets of 4 disks between operative andrelatively widely spaced positions, and, means affording relativetransverse movements of said sets of disks one with respect to theother, between contacting an transversely spaced positions.

9. Paperboard slitting mechanism of the class described, including asupporting frame constructed to afford passage of a paperboard web pastsaid frame, means carried by said frame for supporting upper and lowersets of slitting disks ,respectively above and below'the path of travelof said web, means aif'ording relative up and downmovements between theupper and lower sets of disks between operative and relatively widelyspaced positions, and means aflording' relatively transverse movementsof said sets of disks one with respect to the other, between contactingand transversely spaced positions, said support.- ing means providing agap therein in alinement HOBART w. Baum REF'EBENCES CITED The followingreferences are of record in-thefile of this patent:

' UNITED STATES PATENTS Number Name Date 1,278,766 Seymour Sept. 10,1918 1,888,436 Richards Nov. 22, 1932 1,959,424 Hawkins May 22, 19341,570,939 vCameron Jan. 28, 1928 2,305,536 Langston Dec. 15, 1942Stacker Jan. 23, ms

